Wrench



J. P. SMITH.

(No Model.)

WRENCH- Patented O0t..1, 1895.

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r w. r- 2 Ararat FFTQE.

WRENCH.

lEECIFIGATIQN forming part of Letters Patent No. 54.73039, dated October1, 1895.

Application filed July 27, 1895. Serial No. 557,363- (No model.)

I?) an whom it may concern.-

Be it known that I, JAMES F. SMITH, a citizen of the United States,residing at Gr0svenor Dale, in the county of Windham and State ofConnecticut, have invented a new and useful Wrench, of which thefollowing is a specification.

This invention relates to an improvement in wrenches, and has for itsobject to provide means for reversing what is ordinarily the stationaryjaw of a monkey-wrench and providing one of the faces of said jaw withteeth or serrations, thus adapting the wrench to be used either as anordinary nut-wrench or as a pipe-wrench, as required.

The primary object of the invention is to secure the reversible jaw tothe shank of the wrench in such manner that the securing device will becontained wholly within such jaw, leaving nothing to project beyond theouter face of said jaw to interfere with the proper working of thewrench.

To this end the invention consists in certain novel features and detailsof construction and arrangement of parts, as hereinafter fully setforth, illustrated in the drawings, and finally embodied in the claim.

In the accompanying drawings, Figure 1 is a perspective View showing theapplication of the present improvement to an ordinary monkey-wrench.Fig. 2 is an enlarged detail longitudinal section through the reversiblejaw and the contiguous end of the shank of the wrench. Fig. 3 is atransverse section taken at right angles to Fig. 2. Fig. 4 illustratesin detached perspective the reversible jaw, a portion of thewrench-shank, and the retainingscrew.

Similar numerals of reference designate corresponding parts in theseveral figures of the drawings.

Referring to the drawings, 1 designates the rectangular shank of anordinary monkeywrench, the same being supplied with the usual handle 2and a longitudinally-movable jaw embracing and slidingly mounted uponsaid shank.

4 indicates the usual threaded bolt or shank, which is interposedbetween the sliding jaw and a stationary lug projecting from the shankof the wrench for the purpose of ad j usting said sliding jaw toward andaway from the stationary jaw, (indicated at 5.)

' All of the parts above referred to are similar in construction andarrangement to the ordinary monkey-wrench, with the exception of thestationary jaw, and will not, therefore, need further descriptiontherein.

What is ordinarily termed the stationary or fixed jaw of the wrench isfor the purposes of carrying out this invention made removable andreversible. This jaw resembles the usual fixed jaw in its general shape,differing only in that the inclined outer face of the nose of the jaw isformed with a series of obliquelydisposed teeth or serrations 6, whichupon the reversal of such jaw adapt the wrench to be used as apipe-wrench. In order to adapt the jaw 5 to be reversed, it is formedwith a rect angular aperture or opening, which corresponds in shape andsize to the cross-sectional shape of the shank 1. The jaw 5 fits snuglyupon the end of the shank, and its position is regulated by means of anoppositely-disposed pair of laterally-proj ectin g shoulders7,preferably formed integrally with said shank. When resting upon theseshoulders, the outer face of the jaw is exactly flush with the extremityof the shank 1. In ,order to secure the jaw 5 in place upon the shank,acircular socket or countersink 8 is formed in the extremity of theshank, as shown, the diameter of such socket or countersink beingsomewhat greater than the transverse thickness of the shank. This socketor countersink is extended at diametrically-opposite points into theinner and outer faces of the reversible jaw 5 in such manner as to formwhat may be termed segmental recesses 9, the bases of which are disposedin the same plane with the base of the circular socket or countersink inthe extremity of the shank. In this manner an oppositely-disposed pairof shoulders are formed within the reversible jaw, which are adapted toreceive the pressure of a flat-headed screw 10, the threaded shank ofwhich enters a longitudinally-disposed threaded socket in the end of thewrench-shank, the head of said screw occupying said circular socket orcountersink and having its outer face flush with the outer face of thereversible jaw and the extremity of the shank, in the manner illustratedin the drawings. It will be understood that the segmental recesses 9 areformed in the rectangular opening in the reversible jaw, adjacent to theopposite faces of said jaw, so as to accommodate the head of the screw10 under either adjustment of the jaw.

By means of the construction above described it will be apparent that bysimply loosening and removing the screw 10 the outer jaw of the wrenchmay be instantly reversed for adapting said wrench either as an ordinarymonkey-wrench or as a pipe-wrench. By reason of the particular formationof the circular socket or countersink in the end of the shank of awrench and the segmental recesses and shoulders formed within therectangular opening in the reversible jaw the head of theretaining-screw lies wholly within the plane of the outer face of thereversible jaw, thereby avoiding all projections beyond the outer faceof the reversible jaw, thus protecting said retaining-screw from injuryand facilitating the operation of the wrench. I am aware that it is notnew to make the outer jaw of a monkey-wrench reversible for the purposedescribed. The trouble with devices of this nature has been, however,that the retaining-screw or other device projected beyond the outer faceof the reversible jaw in such manner as to interfere with the properworking of the wrench, and also rendering said retaining device liableto injury, so that it might not be removed when desired with therequisite ease. The aim of this invention has been to overcome theobjectionable fea ture just referred to, and this will be made thesubject-matter of the subjoined claim.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is-

In a monkey wrench, the combination with the shank thereof provided withoppositely disposed shoulders, of a reversible jaw formed with anopening corresponding in size and shape to the cross sectional shape ofthe wrench shank and also formed with oppositely disposed segmentalrecesses, the bases of which form shoulders which are disposed in thesame plane with the base of a circular socket or countersink in the endof the wrench shank, and a retaining screw having its threaded shank inengagement with a corresponding socket in said shank, and its headarranged partially within the countersink in the end of the wrench shankand partially Within the segmental recesses in the reversible jaw,substantially as and for the purpose specified.

In testimony that I claim the foregoing as my own I have hereto affixedmysignature in the presence of two witnesses.

JAMES 1?. SMITH. Witnesses:

CHARLES ARNOLD, E. 0. W001).

